Truck-bolster.



PATBNTED JAN. 9, 1906.

J. C. BARBER.

TRUCK BOLSTER.

APPLICATION FILED MAM, 1905.

2 SHEETS-SHEET 1.

PNA@

PATBNTBD JAN. 9, 1906.

J. C. BARBER.

TRUCK BOLSTBR.

APPLICATION FILED MAM, 1905.

2 SHEETS-SHEET '2.

UNITED STATES PATENT OFFICE. V

TRUCK-BOLSTER.

Specification ofV Letters Patent.

Patented Jan. 9, 1906.

Application filed May 4, 1905. Serial No. 258,755.

T0 all whom it 17mg/ concern:

Be it known that I, JOHN C. BARBER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Truck-Bolsters, and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to truck-holsters, and especially to those that aremade up chiefly of rolled metal of standard form, and has for its objectto improve the same in point of simplicity and efliciency.

To the above ends the invention consists of the novel devices andcombinations of devices hereinafter described, and defined in theclaims.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a plan view of the improvedbolster. Fig. 2 is a view, partly in side elevation and partly invertical section, on the line x2 of Fig. 1. Fig. 3 is a transversevertical section taken approximately on the irregular line :v3 x3 ofFig. 2. Fig. 4 shows the bolster in end elevation, some parts beingsectioned on the line x4 a4 of Fig. 1. Fig. 5 is a vertical longitudinalsection through an end portion of the bolster, illustratingslightly-modified construction thereof; and Fig. 6 shows the bolsterindicated in Fig. 5 principally in end elevation, but with some parts invertical section;

As the compression member of the bolster I employ an I-beam 1, and forthe tension member thereof I employ a flat bar 2.

In the preferred construction illustrated in Figs. 1 to 4, inclusive,the web portion of the I-beam 1 at its ends is cut away between theflanges of the beam in such manner as to leave insettransversely-extended shoulders 1a and short ribs 1b, which latterproject inward from the flanges of said beam, as best shown in Fig. 4.

Riveted, bolted, or otherwise rigidly secured to the ends of thecompression member or beam 1 are caps or joint-blocks 3, preferably ofmalleable iron or cast steel and formed hollow and with internal ribs.These caps 3 fill the spaces left in the ends of the beams 1 by cuttingaway the web thereof, and they are provided with slightly-upturned webextensions or plates 4, which at their inner ends are notched at 4LL toreceive the shoulders 1a, formed at the cut ends of the web of the saidbeam 1. Preferably the extension-web 4 is .extended at 4b a considerabledistance inward of the shoulder 1il and under the web of said beam 1. Attheir sides the caps 3 are formed with grooves 3a, that receive the ribs1b, left on the flanges of the compression-beam l. Rivets 5 are passedthrough the flanges of the beam 1 and through the adjacent verticalwebsofthe caps 3 to rigidly hold the said parts together, thereby insuringthe close engagement between the ribs 1b and grooves 3a. As willhereinafter more clearly appear, the greater part of the shear, due todownward pull on the caps 3, is taken by the ribs 1b, the chief functionof the rivets 5 being to hold said ribs in engagement with the grooves3u. Above the web of the compression-beam 1 the caps 3 have upturnedflanges which, as shown, are secured to the flanges of said beam byrivets 6. Also in the construction illustrated the caps 3 are providedwith upwardly-projecting stop-lugs 7 and with laterally spaced dependingguide,- legs 8. The stop-lugs 7 are adapted to engage with the sideframes of the truck to limit the endwise movement of the bolstertransversely of the truck, and the guide-legs S are adapted to cooperatewith combined roller caps and spring-bases of lateral-motion devices, applied substantially as disclosed and broadly claimed in my United StatesPatent No. 573,636 of date December 22, 1896, entitled Car-truck.

The ends of the tension-bar 2 are passed through suitable seats providedtherefor in the caps 3, and the ends are turned upward over the webextensions 4 of said caps, as shown at the left in Fig. 2. Rivets 9 arepassed through the upper and lower folds of the end portions of the bar2 and through the interposed web extensions 4, thereby rigidly unitingsaid parts.`

Incorporated in the improved truck-bolster I have shown a king-post orstrut Vof novel construction, an eflicient form thereof being shown inthe drawings Figs. l to 4, inelusive. This king-post is made up of aseat or base-section 10 and a body portion 11, the 'former having acylindrical depres'sion 12 in its under surface and the latter having acorrespondingly-formed upper end portion engaging therewith in suchmanner that said body portion 11 may be oscillated in apply- IIO ing itin working position. The base member 10 is riveted to the under surfaceof the central portion of the web of the compression-beam 1 and isprovided with a king-bolt seat 13, that registers with a perforation 13Lin the web of the beam 1 and with a perforation 13b in the upper portionof the said bodysection 11.

With the construction described it is possible to secure the ends of thetension-bar 2 to the caps 3 and to the ends of the compressionbeam 1before applying the king post or strut member 11 in working position.Then the said member 1 l may be forced into position by a lateraloscillatory movement in a plane longitudinally of the members 1 and 2,and under such movement the tension member 2 will be drawn taut. Thefriction between the lower end of the post member 11 and the tension-bar2 will under normal conditions be very great and will be furtherincreased under the weight of the load on the bolster. Hence it is notthrought that rivets or other devices will 'be found necessary to holdthe said member 11 against pivotal movement and in working position.Such devices may, however, be provided, if found necessary or thoughtdesirable.

The bolster described is capable of being very quickly put together andmay be constructed at comparatively small cost. Furthermore, it affordsa maximum of strength with a minimum of metal and provides anarrangement in which the rivets used to connect the v several parts ofthe device are not subjected to intense shearing strains, the said shearbeing taken chiefly by other parts. For instance, under the weight ofthe load on the central portion of the bolster, which will of course betransmitted thereto through a suitable center-bearing, (not shown) theshearing strain is between the shoulder 1a and the seat 41L and betweenthe ribs 1b and seats 3a. The ends of the tension-bar 2 are so bentabout the web extensions 4 of the caps 3 that the rivets 9 are requiredto resist but very slight shearing strains.

In the modified construction illustrated in Figs. 5 and 6 the web of thecompressionbeam 1 instead of being entirely cut away is slit inward ofthe side flanges, so as to leave the ribs 1b, and this slit portion 1Cis turned upward at an angle, as indicated in Fig. 5. Also in thisconstruction the web extension 4 has its shoulder 4@L at its eXtremeupper end, so that it engages with the upper edge of the upturned webportion 1C. Also the rivets 9 in this arrangement are passed throughboth folds of the tension-bar2 and through the upturned web portion 1cand web extension 4. Furthermore, as shown, the caps 3 at their innerend are provided with upper and lower flanges 14, through which and saidbar 2 rivets 15 are passed. Otherwise than described the constructionillustrated in Figs. 5 and 6 is substantially the same as thatillustrated in Figs. 1 to 4, inclusive. The numeral 16 indicates as anentirety a side bearing, which is applied to the web of thecompression-beam 1, but which, however, forms no part of this invention.

From what has been said it will be understood that the bolster describedis capable of modifications other than those specifically noted, allwithin'the scope of my invention as herein set forth and claimed.

What I claim, and desire to secure by Letters Patent of theUnitedStates, is as follows:

1. In a trussed truck-bolster, the combination with a flangedcompression member having its web cut at the ends thereof, leaving theribs 1b, of caps or joint-blocks reacting against the end portions ofthe web of said compression member, and having grooves in their sidesreceiving said ribs 1b, and thereby interlocking the said parts, and atension-bar having its ends benty and interlocked with the said caps orblocks, substantially as described.

2. In a trussed truck-bolster, the combination with tension andcompression members rigidly attached at their ends, of a kingpost orstrut interposed between the intermediate portions of said compressionand tension members, and mounted for oscillatory movement to and fromoperative position, substantially as described.

3. In a trussed truck-bolster, the combination with tension andcompression members, united at their ends, of a two-part kingpost orstrut interposed between the intermediate portions of said two members,and made up of two parts, one being rigidly secured to said compressionmember, and the IOO other having a pivotal movement into and out ofengagement with said tension member, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN C. BARBER.

Witnesses L. W. BARBER, A. M. LOVE.

